Gnee Steel (tianjin) Co., Ltd

C10200 Oxygen Free Copper

Dec 08, 2025

Copper 102 is an oxygen-free copper with extremely high electrical conductivity and good formability. These characteristics make it particularly useful for electrical connectors.

Copper 102 can be deep-drawn from the annealed temper.It is corrosion resistant in normal atmosphere and water. A thin adherent oxide film forms at elevated temperatures which prevents particle contamination and enhances glass to metal seals. The Copper 102 can be readily soldered and brazed. The absence of oxygen makes welds free of inclusions.

 

Available Sizes:

Copper 102 is available from Hamilton Precision Metals as strip product in thicknesses from 0.0005" to 0.010" (0.0127 mm to 0.254 mm) in widths up to 12.0" (304.8 mm). The material conforms to ASTM B 152 and UNS C10200. It is also available in thickness less than 0.0005" (0.0127 mm) in widths up to 4.000" (101.6 mm) maximum.

 

Nominal Composition

COPPER 102 NOMINAL COMPOSITION
Copper 99.95%

 

Mechanical Properties

COPPER 102 MECHANICAL PROPERTIES
  ANNEALED COLD ROLLED
Ultimate Tensile Strength 35,000 PSI 57,000 PSI
Yield Strength (0.2% Offset) 10,000 PSI 53,000 PSI
Elongation in 2" * 40% 2%
Grain Size 0.020 mm -
Modulus of Elasticity (Tension) 17 x 10+6 PSI -
Poisson's Ratio 0.32 -

 

Physical Properties

COPPER 102 PHYSICAL PROPERTIES
Density 0.323 lbs/cu.in.
Melting Point (Approx.) 1080°C
Electrical Resistivity @ R.T. 1.71 Microhm·cm
Temperature Coefficient of Resistivity (0 to 100°C) 3900 PPM/°C
Electrical Conductivity @ R.T 586 MEGMHO·cm
Thermal Expansion Coefficient (20° to 100°C) 7.0 X 10-6/°C
Thermal Conductivity @ R.T. 390 W/m·K
Magnetic Attraction None

 

About us

Founded in 2008, our company specializes in the international trade of high-quality copper products. We are dedicated to providing a comprehensive range of copper-based solutions to a global clientele.

Our core product portfolio encompasses a diverse spectrum of copper and copper alloy forms, including:

Copper Tubes & Pipes: Precision-engineered for applications in HVACR, plumbing, and industrial systems.
Copper Sheets & Plates: Available in various grades and thicknesses for roofing, fabrication, and architectural uses.
Copper Bars & Rods: Supplied as solid profiles, hexagons, or squares for machining, electrical components, and manufacturing.
Copper Wires & Strands: From fine enamelled wires to large conductive cables for electrical and winding applications.
Copper Foils & Strips: Thin-rolled products essential for electronics, transformers, RF shielding, and flexible circuits.

We also offer related products such as Copper Coils, Copper Profiles, Copper Blanks, Copper Busbars, Copper Fittings, Copper Alloys (including brass and bronze), Copper Anodes, and Copper Cathodes.

Email:sales@gneesteel.com

hvac copper pipe

 

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